US1928738A - Pump - Google Patents

Description

W. E. PIKE Oct. 3, 1933.

PUMP

Filed Feb, 21, 1931 2 Sheets-Sheet l W. E. PIKE Oct. 3, 1933.

PUMP

2 Sheets-Sheen. 2

Filed Feb. 21, 1931 Patented Oct. 3, 1933 V I 1,928,738

I UNITED STATES PATENTOFFICE PUMP William ErPike, Winston-Salem, N. c.

- Application February 21, 1931. Serial No. 517,617

' IClaim. (01. 221-95) This invention relates to pumps, and more parage tanks are employed in a system, to contain ticularly to pumps designed primarily for use in the various grades of gasoline, such as standard dispensing gasoline. gasoline, high test gasoline, or the like, however,

An important object of the invention is the since these tanks and pipes leading therefrom provision of means-whereby a single compressed are identical, the construction and operation of 0 air supply tank may be utilized in supplying c'omthe pump when only one storage tank is used, pressed air to a-pluralityof supply tanks, making will be described in detail; The pipe is supit unnecessary to provide an independent complied with a valve housing 11, at the lower end pressed air supply tank and valve, for each gasothereof, the valve housing accommodating the 0 line supply tank. foot valve 12, which operates to admit gasoline Another object of the invention is to provide to the discharge pipe 10, and at the same time means for automatically controlling the operaprevent air pressure entering the tank 5, through tion of the device, when :the filling hose have the pipe 10. As shown, the pipe 10 extends to a been removed for directing gasoline to an autopoint above the ground surface, where it is supmobile gasoline tank or similar place of deposit. plied with a cap 13 to normally close the pipe.

With the foregoing and other objects in view, Connected with the pipe 10, is a pipe 14 that which will appear as the description proceeds, connects with the pipe 15 which has its lower the invention resides in the combination and end extended into the supply tank 16, the conarrangement of parts and in the details of construction of the tank 16 being such that'gaso- 20 struction hereinafter described and claimed, it line will be siphoned from the tank 5, to enter being understood that changes in the precise emthe supply tank 16, to maintain the tank 16 full at bodiment of the invention herein disclosed, may all times. 7 be made within the scope of what is claimed, The reference character 17 designates a diswithout departing from the spirit of the invencharge pipe, which extends into the supply tank 25 tion. V 16, and is supplied with a foot valve 18 at its lower 8 Referring to the drawings: end, the foot valve permitting gasoline to flow Figure 1 is an elevational View of a pump and from the supply tank 16 into the pipe 1'7, and system, constructed in accordance with the inat the same time prevent the return of gasoline vention. into the tank 16, through the pipe 17.

39 Figure 2 is a sectional view through the valve Communicating with the pipe. 17 is a pipe 19 body of the valve employed in controlling the to which the upstanding pipes 20 are connected, passage of air to the gasoline supply tanks of the the pipes 20 extending to the meters 21, which ystem. i are of a well known type, the meters acting to Figure 3 is an enlarged sectional view throug measure the gasoline passing through the pump. one Of the foot valves of the p p- Valves 22 are mounted on the hose 23, the valves Figure 4 is a sectional view through the filling being so constructed that they may be readily and hose supporting hook of the pump, illustrating easily controlled by the operator, to control the the mercury of the switch in a position to break passage of gasoline through the hose. The valves the circuit to themagnet of the valve operating 22 are of such construction that they may be mechanism. hung on the hooks 24. Each of these hooks 24 Figure 5 is a sectional view through the hook. includes a hollow body portion pivotally mounted Referring to the drawings in detail, the system near the front end thereof, as at 25, so that the With Which y p p is used, prises a storrear endsof the hooks will automatically swing age tank 5 which is pp d Wit gaso downwardly, when the valve members 22 are rethrough the filling pipe 6, the pipe being closed moved therefrom, the valve members 22 acting by means-of the usual screw cap 7. to normally tilt the hooks 24 so that the front A vent pipe indicated by the reference charor hook ends thereof lie below the rear ends. acter 8 also communicates with the storage tank Mercury containers 26 are mounted in the hook 5, and extends an appreciable distance above the members 24 and are formed with openings to reground surface in which the tank 5 is buried, the ceive the wires 27 that lead to the coil 28 of end of the pipe 8 being supplied with branch the magnet, to be hereinafter more fully depipes 9. scribed, the wires acting to provide a circuit be- The reference character 10 designates the distween the hooks 24 and magnet which of course charge pipe leading from one of the storage tanks is in circuit with a suitable source of electricity 5, it being understood that several of these storsupply.

on their hooks. The valve through which a par- The coil 28 is mounted on the valve 29 and is constructed to attract the armature of the magnet, which is mounted on one end of the arm 31, the arm 31 being pivotally mounted on the supports 32'of the magnet. One end of the arm 31 extends downwardly as at 33, Where it contacts with the upper end of the lever 34, the lower end of the lever 34 being connected with the rod 35 that extends into the valve 29. This rod 35 carries the valve 36 which seats against the valve seat 36'.

The valve member 37 is mounted on one end of the rod 35, which rod extends into the valve 29, at the opposite end thereof, the valve being adapted to seat against one end of the valve 29 under normal conditions, the valve36 being open. The coiled spring 38 engages one end of the valve 29 and acts to normally urge the valve rods 35 and 35 in one direction to hold the valve 36 unseated under normal conditions, while the valve 3'7 remains seated, and since the valves 36 and 37 are mounted on independent rods, it will be obvious that the valve 36 .may move a greater distance than the valve 3'7, allowing the air to exhaust rapidly.

' Forming a part of the valve 29, is a chamber I 39 which is disposed between the valve seats air pressure reducing valve 43, which is adapted to maintain a predetermined pressure on the valve 37 at all times.

Gauges 44 are mounted on the compressed air pipe 42 and are disposed on opposite sides of the air pressure reducing valve 43, to register the air pressure at both sides of the valve 43. Air passes from the chamber 39, into the supply tank 16, through the pipe 45, there being provided a branch pipe 46 connected with the pipe 47, for directing air under pressure into an adjacent gasoline supply tank. As air enters the gasoline supply tanks 16, it is obvious that gasoline will be forced from the tanks through the discharge pipes thereof, from where the gasoline will pass through the meters and into the hose, to be directed to the place of deposit.

The operation of the pump is as follows: Assuming that it is desired to dispense a quantity of gasoline, and the valves 22 are hanging tioular type of gasoline passes on being dispensed by the pump, is removed from its hook, whereupon the hook swings upwardly, the mercury in the mercury container 26, moving to complete the circuit between the wires 27, which in turn energize the coil 28, drawing the armature 30 into engagement with the coil. As the armature 30 is drawn downwardly, the end 33 of the arm 21 moves the lever 34 to force the rod 35 inwardly, causing the valves 36 and 37, to take positions as shown by Figure 2 of the drawings.

Air now passes from a suitable source of compressed air supply, through the pipe 42 and into the chamber 39, from where it passes through the pipes and'47, into the supply tanks 16. It follows that gasoline is forced upwardly through the discharge pipes 17, and through the hose and valve, which has been operated by the attendant, to release gasoline. As the gasoline passes through the meters 21, the, number of gallons will be registered, so that the'attendant may determine the number of gallons dispensed. When the proper amount of gasoline has been dispensed, the valve is hung on its hook, to the end that the seat of the valve and hose will tilt the hook and cause the mercury in the mercury container 26 to flow into the forward end of the container, where it disengages one of the wires 27, breaking the circuit. When the circuit to the coil 28 has been broken, the spring. 38 operates to'force the rod 35 to its initial position, seating the valve 3'7 and unseating the valve 36. The air pressure in the tanks 16 will now exhaust through the pipe 45, chamber 37, valve chamber 40 and pipe 48, that is shown as connected with the vent pipe 8. While I have shown and described two supply tanks, it is obvious that any number of supply tanks desired, may be used and controlled by a single air control mechanism or pump- -I claim:

A fluid dispensing system comprising a storage tank, supply tanks, pipes leading from the storage tank to the supply tanks, filling thesuppiy tanks, a valve member including a body portion, said body portion having an enlarged bore and having chambers at the ends of the bore, means for establishing communication between the supply tanks and the bore of the valve, to admit air to the supply tanks, a valve rod extending through the bore, valves on the valve rod and adapted to seat against the ends of the bore controlling the passage of air through the bore, a pipe for supplying air under pressure to the bore, a lever at one end of the valve bodyand contacting with the valve rod, a pivoted arm disposed adjacent to the lever, and engaging the lever for operating the lever and rod, electrically controlled means for operating the arm moving the lever and valve rod to admit air to'the supply tanks, and discharge pipes connected with the supply tanks for directing liquid from the tanks. 1

' WILLIAM E. PIKE.

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